A system of national government in which power is divided between a central authority and a number of regions with delimited self-governing authority.
Covenantalism.
The belief that such a system is superior to other forms of government.
The land ruled by such a government, either together or separately.
A government where power is shared by four people, especially (historical) the Herodian tetrarchy established in Judea after the death of Herod and the Tetrarchy of Diocletian which ruled the Roman Empire in the years 293-313.